1055145 has 32 divisors (see below), whose sum is σ = 2080512. Its totient is φ = 444672.

The previous prime is 1055143. The next prime is 1055167. The reversal of 1055145 is 5415501.

It is not a de Polignac number, because 1055145 - 2¹ = 1055143 is a prime.

It is a super-2 number, since 2×1055145² = 2226661942050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

1055145 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1055141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 979 + ... + 1751.

It is an arithmetic number, because the mean of its divisors is an integer number (65016).

2^1055145 is an apocalyptic number.

1055145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1055145 is a deficient number, since it is larger than the sum of its proper divisors (1025367).

1055145 is a wasteful number, since it uses less digits than its factorization.

1055145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 1055145 is about 1027.2025116792. The cubic root of 1055145 is about 101.8053766702.

It can be divided in two parts, 105 and 5145, that multiplied together give a square (540225 = 735²).

The spelling of 1055145 in words is "one million, fifty-five thousand, one hundred forty-five".